The diagram depicts the sequential process of recycling plastic bottles.
In total, there are 9 stages involved, constituting a man-made cyclical process. It commences with the transportation of materials, which are deposited into a waste container, and concludes with the creation of end products.
Initially, a truck collects the bin containing garbage and transports the bottles to the recycling center. Here, a sorting employee segregates plastics into two categories: those deemed useless and those deemed useful. Subsequently, the useful bottles are compacted into blocks and crushed between two wheels to form small pieces.
Afterward, the small pieces undergo a cleaning process in water before proceeding to a production machine, where they are transformed into plastic pellets and deposited into a transparent container. These pellets are then subjected to heat for a period of time, resulting in their formation into a raw material. This material is further processed into various types of products suitable for manufacturing, ranging from clothing to boxes and pencils. These items themselves are recyclable, thus initiating the recycling process anew.